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pav-90 [236]
3 years ago
8

Why do plants need magnesium?

Biology
2 answers:
padilas [110]3 years ago
8 0

Answer:

Magnesium is a component of chlorophyll.

Explanation:

Molodets [167]3 years ago
4 0
It helps them grow
Please mark brainliest
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A scientist was observing an unknown slide under an electron microsocope; he found a cell without a well-defined nucleus but wit
Blababa [14]
Let's eliminate this one by one.

Animal cell does not have walls. So we can eliminate The third option.

Plant cells does have walls, but they also have well-defined nucleus. So we can eliminate the second option

The leave : A. Prokaryotic as the answer

hope this helps


8 0
3 years ago
Read 2 more answers
Limiting factors in water bio mes include
lawyer [7]

Answer:

all of the above

Explanation:

Water biomes describe all the living things living in an area of water such as a lake or ocean. The surrounding environment plays a huge part in what organisms able to live there.

For example, green plants and algae require sufficient sunlight and oxygen to perform photosynthesis. Green plants and algae are an important food source for many other organisms. The amount of salt is important for various fish, as they will be unable to survive in very high salt concentrations. Therefore, all of the above are limiting factors.

3 0
3 years ago
how would you use the scientific method to answer this question: do mice live longer when they are fed high-sugar diets
Zielflug [23.3K]

Answer:

The question: Do mice live longer when they are fed high sugar diets?

Hypothesis: There are two hypothesis the null hypothesis which we assume is correct, it states that a high sugar diet will have no effect on the life span of a mouse and an alternate hypothesis that we accept if evidence shows that sugar does increase the life span if mice. It says a high sugar diet does incerease the life span of mice.

Prediction: Assume that the null hypothesis is correct. High sugar diets will not increase the life span of the mice.

Collect data through experimentation. Use some mice as a 'control'. These mice will not undergo any changes but will be kept for comparison. Expose some other mice to high sugar diets and the compare the outcome with the 'control' mice.  

Analyzing: From the experiment this you can choose which hypothesis you are going to accept. I.e. null: no change or alternate: there was a change and do some extra research to back up your hypothesis.

Hope this helps :)

8 0
4 years ago
select one of the main body systems and explain why it is essential to keep the whole body functioning
tatiyna
Circulatory system: 

--The circulatory system is also known as the cardiovascular system. 
-- It is composed of the heart, blood, blood vessels and also includes the lungs. 

The primary function of the circulatory system to distribute oxygen, nutrients, hormones and other gases to cells of the other body systems. It delivers all the necessary components needed for all the cell activities. Without the circulatory system, we would not be alive. 

It is our blood that carries these necessary nutrients, hormones, and oxygen. All these components trigger certain processes that keep other organs functioning. It also plays a role in eliminating waste by carrying them to the necessary organs that will filter them out. Without a way to dispose of waste, the body will eventually die.
3 0
3 years ago
the force of attraction or repulsion between magnetic poles is called a magnetic domain true or false
satela [25.4K]
False. It is magnetism. Magnetic domain is rather a region within a magnetic material in which the magnetization is in a uniform direction.
6 0
3 years ago
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